Ranger
Agree completely but there are ways to do things without anyone knowing if you are careful and don't rush things. Normally you can pump down most parts of a plant, the hardest is the condenser if only one.
A 20 litre bucket of water will absorb a lot of gas, as P&S said the condenser is another place but care has to be taken not to damage the galvanizing on the tubes. Another way is to put the hose in the air inlet of the condenser, what doesn't get absorbed by the water will get exhausted out but once again don't be in a rush.
Paul